It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Research has determined that most people are happiest at 7:26pm on a Saturday night.
70
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
Your thumb is about the same size as your nose.
124
Enamel is hardest substance in the human body.
61
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18